What is the biggest need for the Arizona Cardinals?

What is the biggest need for the Arizona Cardinals?

For most NFL teams, it’s nearly impossible to fill all of their roster needs in a single offseason, leaving them with problem spots to address the following year.

For the Arizona Cardinals, big needs were filled at wide receiver and offensive line in the 2017 NFL draft, but they failed to secure a potential replacement for quarterback Carson Palmer, who turns 38 this season.

As training camp approaches, coach Bruce Arians and company will be looking to bounce back from a disappointing 2016 campaign. But looking ahead to next offseason, what is the biggest need the Cardinals need to address?